The Department of Defense has prepared a guide (large pdf) for military personnel who are engaged in foreign disaster relief operations, an endeavor which arises with some frequency.
“The U.S. Government (USG) responds to approximately 70-80 natural disasters across the globe each year. In approximately 10-15 percent of these disaster responses, the Department of Defense (DoD) lends support to the overall USG effort.”
“DoD disaster assistance can range from a single aircraft delivering relief supplies, to a fullscale deployment of a brigade-size or larger task force. Though the overall percentage of disasters requiring DoD support is relatively small, these disasters tend to be crises of the largest magnitude and/or the greatest complexity.”
The new guide “offers an overarching guide and reference for military responders in disaster relief operations.” See “Department of Defense Support to Foreign Disaster Relief,” GTA-90-01-030, 13 July 2011.