A man sits alone at Arlington West, a memorial display with hundreds of crosses and other religious symbols representing service people killed in wars in Iraq and Afghanistan, sponsored by Veterans for Peace, on the beach at Santa Monica, California. (Photo: AP Photo/Reed Saxon)

Americans across the nation and across the globe observed Memorial Day on Monday, honoring the military, incliuding those who lost their lives in war and also veterans.

The Obamas visited Arlington National Cemetery where the president participated in a wreath-laying ceremony at the Tomb of the Unknowns. In Afghanistan, U.S. troops paused to remember the fallen.

Query: How will you honor the military on Memorial Day?