From the Document: "As a result of the nation's extended involvement in contingency operations around the globe, some service members have experienced prolonged, frequent, and/or stressful deployments. In addition, preparation for deployments (e.g., training, exercises, temporary duty assignments) can lead to extended working hours or frequent travel away from home station. The pace of operations for individuals is commonly referred to as personnel tempo (PERSTEMPO) and can affect quality of life, work satisfaction, and overall morale for members and their families. Congress oversees the Department of Defense's (DOD's) PERSTEMPO management, policies and programs. In addition, congressional actions to authorize force size (i.e., end-strength) can affect the number of personnel available for deployment. Appropriated funds for military pay and benefits (including leave and morale programs) may compensate troops for time spent away."
CRS In Focus, IF11007
Congressional Research Service: https://crsreports.congress.gov/