What army manual do it say about standing up while eating in the mess hall?

Army regulations typically discourage standing while eating in the mess hall to promote discipline and respect for the dining environment. According to Army Field Manual 7-22, which covers physical readiness, soldiers are encouraged to maintain proper conduct during meals, including sitting down while eating. This policy is in place to foster a more orderly and respectful atmosphere during mealtime. For specific guidance, soldiers should refer to their unit's Standard Operating Procedures (SOP).