This is what everyone feels as they transition from one body to the next—this dejá vu, this discomfort. In your case, you were a soldier, fighting a war you neither supported or understood. A shell from your own side misfired, blowing you up as you scarfed down a powdery meal alongside your buddies. The next time you’re born, you'll have a nagging feeling that even if you did this all previously, you're way luckier now. Listen to the reverberations of that and other previous lives, then continue; this is a good body, and you deserve to be grateful for it.