There is an app on iTunes that has a bunch of military survival manuals called "Survivalpedia - Military and Wilderness Survival Field Manuals". Check it out. iSurvival - Army Survival and Field Manuals (Premi | Fishington Studios
Not only that but it went 50% off between this morning and this evening. The add-ons are still full price but not ridiculous to have in an app instead of as individual docs.