Avi k – when my brother was in the army, the chayalim in his unit/base used lachmaniot for the afikomen for the Pesach Seder. Fortunately, he had gotten off for leil haSeder, but they told him about it afterwards.
There are tons of problems with tznius in the army. Chayalim have been forced to listen to kol isha, there are women soldiers and officers around, etc. Roshei Yeshivas in the Hesder world have complained about these issues many times and threatened to stop sending boys to the army.
When my friend’s brother was in Nachal Chareidi, the army did many things that they weren’t supposed to such as having women officers on their base and sending foods that did not have the required hashgacha.
Many boys stop being Frum in the army.
There are definitely problems with the way the army is run. Again, I am not discussing what the response should be, but the army is definitely not run according to halacha.