Looks like Bootcamp
On the back is a note to Pearl (Woodyard/Rhodes 1894 to 1964). The photo has been cut so the note is only partially there. All I can get is "Pearl" & "We are pulling out this morning"
I don't know the branch of service or the date. Pearl Woodyard/Rhodes had 4 brothers; James 1891, Charles 1892, Wesley 1897 & George 1905. I suspect this is one of them because on the back it looks like the word Mom scratched over just before Pearl's name.