The foxhole, a hasty fighting position, has been employed in warfare since its inception as an easily constructed means of cover from all forms of incoming fire.
A traditional foxhole has always been a shallow pit dug into the ground, large enough to accommodate at least one soldier. Its popularity has been directly attributed to its ease of construction and ability to be constructed in any location, utilizing materials that are readily available. The foxhole's primary function is to reduce the silhouette of the individual occupying the structure, while also protecting any occupant from multiple types of incoming fire.
There are a number of defensive alternatives to the foxhole including trenches, pillboxes, and bunkers. Each of these alternatives offer different advantages to the defending force by offering higher levels of concealment or the ability to house greater numbers of soldiers or weapons. It should be noted that many of these more complex fighting positions began their existence as a humble foxhole. Defensive commanders will often utilize the foxhole to "fill the gaps" in the defensive line where larger structures are impractical due to construction limitations. This tactic helps to shore up defenses in weaker locations and allows for a well rounded defense.
Today it is thought that foxholes have been phased out of military use due to the implementation of more durable designs and structural improvements, nothing could be further from the truth. Foxholes, like other creations of warfare, have changed dramatically since their creation. They have evolved from crude shelters made of sticks and stones into reinforced structures that offer full protection from sustained bursts of blaster fire; some constructions even provide shelter in orbital bombardments. Its life-support system can sustain twenty sentients for an extended period of time. These simple structures have saved the lives of many soldiers, and can still be found on nearly every battlefield and around many military installations.