A foxhole may look like “just a hole,” but that description is about as accurate as calling a canoe “just a wet chair.” A properly planned foxholemore formally called an individual fighting positionis a compact earthwork designed to keep its occupant below the surrounding ground level while providing protection from weather, loose debris, and other hazards.
Historically, military forces constructed foxholes in stages, beginning with a shallow scrape and gradually improving it as time and materials allowed. The same staged approach works for lawful training exercises, historical demonstrations, survival courses, and private-property projects. However, digging into the ground creates real dangers. Soil can collapse without warning, buried utilities can be struck, and a low area can become a bathtub during heavy rain.
This guide explains how to build a foxhole in seven steps while emphasizing excavation safety, drainage, environmental responsibility, and responsible use. It is intended for supervised training, educational activities, reenactments, or emergency-shelter practicenot unlawful activity or unsupervised construction on public land.
What Is a Foxhole?
A foxhole is a small, below-ground position intended for one or two occupants. Modern U.S. military publications generally use terms such as fighting position, individual fighting position, or survivability position. The familiar word “foxhole” remains popular because it is shorter and sounds considerably better than “temporary person-sized excavation.”
Military guidance distinguishes between a hasty position and a deliberate position. A hasty position may begin as a shallow depression that reduces a person’s profile. A deliberate position is deeper, better drained, reinforced where necessary, and periodically inspected. Army doctrine emphasizes building positions progressively rather than attempting an elaborate structure all at once.
For civilian training, the safest version is usually an open-topped, body-sized position with gently sloped or properly supported walls. Do not construct a roof covered with logs and heavy soil unless the design has been evaluated by a qualified engineer. A homemade roof may appear sturdy right up until gravity files a strongly worded complaint.
Before You Dig: Essential Safety Rules
Obtain permission
Only dig on property where the owner has clearly authorized the project. Many parks, historic sites, forests, and protected areas prohibit disturbing soil, plants, archaeological resources, or natural features. National Park Service guidance consistently promotes minimizing ground disturbance and leaving natural sites as they were found.
Contact 811 in the United States
Contact the national 811 service several business days before digging, even when the proposed hole seems shallow. Utility lines can be closer to the surface than expected, and their depth can vary due to grading, erosion, or earlier construction. Wait until all utilities have responded and marked the work area before breaking ground.
Take excavation hazards seriously
OSHA identifies cave-ins as the greatest danger associated with excavation work. Soil is extremely heavy, and even a relatively small wall collapse can trap or seriously injure someone. Water accumulation, falling material, unstable edges, equipment vibration, and damaged protective materials create additional risks.
Never enter a deep or unstable excavation simply because it “held up yesterday.” Conditions can change after rain, freezing, thawing, nearby vehicle movement, or repeated foot traffic. When there is uncertainty about soil stability, stop and consult a competent excavation professional.
Tools and Materials You May Need
- Full-size shovel or entrenching tool
- Pick or mattock for compacted soil
- Garden rake
- Measuring tape
- Wooden stakes and marking cord
- Work gloves and sturdy boots
- Eye protection
- Drinking water and sun protection
- Buckets for removing loose soil or water
- Approved timber, boards, or commercial shoring materials when professionally specified
- Natural surface material reserved for restoration
A small folding shovel is useful for finishing corners and cleaning the floor, but it is not magical. Attempting to excavate several cubic feet of clay with a palm-sized tool is less “rugged fieldcraft” and more “an ambitious wrist-injury program.” Use full-size tools when conditions permit.
How to Build a Foxhole in 7 Steps
Step 1: Select Safe, Stable Ground
Choose a location on firm, reasonably level ground that is not inside a drainage channel, dry creek bed, flood-prone depression, landslide area, or steep slope. Look above as well as below. Dead branches, leaning trees, loose rocks, retaining walls, and nearby machinery can create hazards even when the soil itself appears sound.
Avoid sandy, saturated, previously disturbed, cracked, or loosely filled soil unless an excavation specialist has approved a protective system. OSHA soil classifications recognize that granular and water-saturated materials are especially prone to movement.
Check the weather forecast and surrounding terrain. A hole that is perfectly dry at noon can collect runoff during an evening thunderstorm. Ready.gov advises moving away from floodwater and unstable slopes rather than relying on low-lying shelter during flooding or landslide conditions.
Step 2: Mark a Compact Outline
Use stakes and cord to mark a narrow rectangle sized for the intended occupant. A one-person position should generally be only wide enough for comfortable shoulder movement and long enough to crouch, turn, and use a shovel safely. Historical Marine Corps guidance similarly describes a one-person position as compact, shoulder-width, and long enough to accommodate an entrenching tool.
Do not make the outline larger merely because digging is going well. Every extra inch produces more spoil, takes more time, increases wall area, and creates more ground that must later be restored. Build for function, not for the underground ballroom market.
Before excavation begins, designate an entrance side and a spoil-storage area. Keep people, heavy materials, and vehicles away from the edge.
Step 3: Remove and Preserve the Surface Layer
Cut the turf, leaf litter, or upper layer of soil into manageable sections and place it aside. Keeping the surface material intact makes restoration much easier when the exercise is finished. It can also be returned around the completed position to reduce erosion.
Remove roots carefully rather than chopping indiscriminately. Large roots may belong to nearby trees and may also help stabilize the soil. Relocate the project when major roots, archaeological material, pipes, cables, contaminated soil, or unknown objects appear.
Place excavated soil far enough from the edge that it does not roll back into the hole or add unnecessary pressure to the wall. OSHA guidance for professional excavations stresses keeping spoil piles and heavy loads away from excavation edges.
Step 4: Dig in Shallow Stages
Excavate evenly in stages rather than immediately creating one deep vertical wall. Begin with a shallow scrape, inspect the ground, and then deepen the position gradually. Military manuals likewise describe fighting positions as progressive structures that are improved over time.
As the position deepens, monitor the walls for cracks, bulging, falling grains, trickling soil, or water seepage. These are warning signs, not decorative effects. Exit immediately if the walls begin moving, and do not reenter until the excavation has been evaluated and made safe.
For a training position, stop at the minimum depth needed to meet the exercise objective. Historical one-person fighting positions were commonly fitted to the occupant’s height, often reaching approximately chest or armpit level when standing on the working surface. That historical measurement should not override modern excavation precautions or local regulations.
Provide a safe, unobstructed way to get in and out. Do not jump into the hole, and never rely on loose stacked objects as steps.
Step 5: Shape the Floor and Manage Water
Grade the floor slightly toward a small drainage sump at one end. The sump is simply a lower collection point from which water can be removed with a cup, sponge, or small container. Marine Corps training material identifies a water sump as a common feature that collects water and may also provide extra foot space for a seated occupant.
Do not dig a channel that directs runoff from higher ground into the position. Divert surface water around the outside using shallow, non-erosive grading only where permitted. If water begins seeping continuously through the walls or rising from the floor, abandon the position. Pumping water out does not automatically make unstable soil safe.
A thin removable floor mat or small wooden platform may improve comfort in supervised training, provided it does not hide wall movement, standing water, or other hazards.
Step 6: Stabilize and Camouflage Responsibly
Loose soil may be formed into a low, broad berm set back from the edge, but it should not become a tall pile that can collapse inward. Pack soil gently and avoid loading the lip of the excavation. Sandbags may help manage loose earth, but they are not a substitute for engineered wall support.
Military manuals describe parapets, revetments, timber, sandbags, and other construction materials, while repeatedly warning that poorly constructed positions can collapse and bury their occupants.
For lawful training or reenactment, camouflage should mean visually blending disturbed soil with the immediate surroundingsnot cutting live vegetation, damaging habitat, blocking paths, or creating a concealed hazard for hikers and animals. Use only materials the landowner has approved.
Do not build improvised overhead cover by placing logs across the opening and piling soil on top. Heavy overhead structures require reliable lateral support, verified load capacity, proper materials, and professional inspection. A few branches and cheerful optimism do not constitute structural engineering.
Step 7: Inspect, Maintain, and Restore the Site
Inspect the position before anyone enters and again after rain, temperature changes, nearby equipment movement, or visible deterioration. Check for wall cracks, soft edges, pooled water, loose material, blocked exits, insect nests, snakes, and damaged supports. Army guidance emphasizes inspection during each stage and continued maintenance after construction.
When the exercise ends, remove all equipment and trash. Backfill the excavation in layers, compacting each layer enough to reduce later settlement. Replace the reserved topsoil or turf, restore natural drainage, and disguise the disturbance as permitted by the property owner.
Do not leave an open foxhole unattended. It can injure people, trap wildlife, collect water, and create liability for the landowner. The most responsible foxhole is one that disappears when its legitimate purpose is complete.
Common Foxhole-Building Mistakes
Digging before contacting 811
People often assume utility lines are too deep to reach with a shovel. That assumption can lead to electrical shock, gas leaks, disrupted service, expensive repairs, or worse. Contacting 811 is part of planning, not an optional side quest.
Choosing the lowest available ground
Low ground feels naturally protected, but it also collects rainwater. Look for stable terrain with drainage away from the proposed position.
Creating vertical walls in loose soil
Straight walls may look tidy, but appearance does not equal stability. Loose, sandy, wet, or previously disturbed soil can collapse suddenly. Use approved sloping, benching, shoring, or shielding methods when required by conditions and regulations.
Piling spoil directly on the edge
Freshly excavated soil adds weight to the wall and can slide back onto the occupant. Keep spoil and heavy equipment well away from the lip.
Adding an unengineered roof
An overhead layer of timber and soil can weigh thousands of pounds. Without properly designed supports, it turns a shelter into a collapse hazard.
Forgetting an exit plan
A person must be able to leave quickly without climbing on unstable walls. Keep the entrance clear and ensure another responsible adult is present during the project.
Experience-Based Lessons From a Training Foxhole Project
The most useful lesson from supervised foxhole-building exercises is that the digging itself is rarely the hardest part. The difficult part is managing everything surrounding the hole: soil, water, tools, fatigue, teamwork, and the strong human temptation to say, “That wall looks fine,” without conducting an actual inspection.
Consider a typical weekend field-training project on private rural property. The group begins with shovels, measuring tape, gloves, water, and confidence levels normally associated with people who have not yet met compacted clay. The first proposed site appears ideal because it sits behind a small rise and is screened by brush. A closer inspection, however, reveals that runoff from the hill passes directly through the area. After rain, the position would become a muddy collection basin. Moving several yards to slightly higher ground saves hours of drainage trouble.
The next surprise is how quickly excavated soil accumulates. A modest body-sized hole produces an impressive pile, especially when the soil breaks into large clods. Beginners commonly place this material directly beside the opening because it is convenient. Within minutes, the edge becomes crowded, loose chunks roll back into the work area, and people have nowhere safe to stand. Establishing a spoil zone before digging keeps the edge clear and makes restoration more organized.
Tool rotation also matters. One person loosens compacted soil with a mattock, another shovels it out, and a third moves it to the spoil area. Rotating roles prevents exhaustion and reduces careless swings in a confined space. Two people should not use long-handled tools inside a narrow position simultaneously. That arrangement is less a productivity strategy and more an accidental demonstration of why hard hats exist.
As the excavation reaches knee depth, small cracks may appear near a corner. An inexperienced group might smooth them over and continue. A safety-conscious group stops, exits, examines the soil, and modifies or abandons the site. Cracks are information. Treating them as cosmetic flaws is a serious mistake.
Water management becomes the next practical lesson. Even without rain, damp soil can produce a slick floor. Grading the bottom toward a small collection point makes bailing easier, while a removable board provides a drier standing surface. The board must not conceal erosion or water emerging from below.
Comfort is another reality check. A foxhole that technically fits a person may still be miserable if it is too narrow to turn, has no safe foot position, or forces shoulders against crumbling walls. Testing the outline before deepening it prevents a great deal of corrective digging. Compact is efficient; cramped is merely uncomfortable with extra dirt.
Finally, restoration takes longer than expected. Soil does not return to the ground as neatly as toothpaste returns to a tube. Backfilling in layers, lightly compacting each layer, replacing the original surface material, and checking for settlement afterward produces a far better result than dumping everything in at once. A responsible project concludes only when the site is safe, stable, clean, and no longer presents a hidden hazard.
The broad experience is simple: successful foxhole construction depends less on aggressive digging than on patient observation. Choose the right site, work progressively, respect the weight of soil, stop when conditions change, and restore the land. The shovel does the excavation, but judgment keeps the project from becoming a cautionary tale.
Frequently Asked Questions
How deep should a foxhole be?
There is no universally safe civilian depth. Historical military positions were often fitted to the occupant, but modern depth decisions must account for soil type, moisture, wall protection, access, local law, and professional excavation guidance. Keep training excavations as shallow as practical.
Can a foxhole protect someone during a tornado?
A homemade outdoor excavation is not a substitute for a FEMA-rated safe room, storm shelter, basement, or designated community shelter. It may flood, collapse, fill with debris, or expose the occupant to lightning and wind-driven objects.
Can plywood be used to support the walls?
Random pieces of plywood should not be treated as an engineered shoring system. Proper support requires materials, spacing, bracing, and installation methods appropriate for the soil and anticipated loads.
How long does it take to build a foxhole?
Time varies widely with soil, tools, depth, weather, experience, and the number of workers. A shallow training scrape may take less than an hour, while a carefully excavated and safely stabilized position may require several hours or professional equipment.
Should a foxhole have overhead cover?
Not unless it has been professionally designed and inspected. Soil-covered roofs create extremely heavy loads and may collapse without warning.
Is it legal to build a foxhole in a national park?
Visitors should assume that significant excavation is prohibited unless park officials explicitly authorize it. Public lands may protect vegetation, archaeological resources, wildlife habitat, and natural soil profiles. Always contact the managing agency first.
Conclusion
Learning how to build a foxhole is ultimately an exercise in earthwork planning, not merely shovel technique. A safe position begins with permission, utility marking, stable terrain, and a realistic understanding of excavation hazards. It is then marked compactly, dug in stages, drained, inspected, and restored after use.
The seven-step method is straightforward: choose safe ground, mark the outline, preserve the surface layer, dig progressively, manage water, stabilize responsibly, and inspect or restore the site. Skip any of those steps and the project may become wetter, weaker, more damaging, or considerably more memorable than intended.
Note: This article is for lawful education, supervised training, historical interpretation, reenactment, and private-property survival practice. Excavations can collapse and kill. Follow local laws, contact 811 before digging in the United States, obtain landowner permission, and consult a qualified excavation or structural professional whenever soil stability or reinforcement is uncertain.
Research Basis
This article synthesizes safety and construction principles reviewed across U.S. Army and Marine Corps fighting-position manuals, the Soldier’s Manual of Common Tasks, Army defensive-operations publications, Marine rifle-squad guidance, OSHA trenching resources, the national 811 service, National Park Service Leave No Trace guidance, and Ready.gov flood and landslide materials.
