Ok so in a zombie apacolypse the millitary can do 1 of 2 things. 1 it can stay together and fight the zombies or 2 it can disband along with the rest of the government, this plan applies to the 2nd one. Now in the time before the army disbands you will need weapons food water and shelter.
For food I wouldn't suggest a.store because everyone will rush to them and it will be chaos I suggest a food shipping company less people will be there a lot of food
For water my advice would be to fill up as many buckets (or similar items) with water before its shut off
