Columns in this table

• Total:
• Gulf War (9/2001 or later), no Gulf War (8/1990 to 8/2001), no Vietnam Era
• Gulf War (9/2001 or later) and Gulf War (8/1990 to 8/2001), no Vietnam Era
• Gulf War (9/2001 or later), and Gulf War (8/1990 to 8/2001), and Vietnam Era
• Gulf War (8/1990 to 8/2001), no Vietnam Era
• Gulf War (8/1990 to 8/2001) and Vietnam Era
• Vietnam Era, no Korean War, no World War II
• Vietnam Era and Korean War, no World War II
• Vietnam Era and Korean War and World War II
• Korean War, no Vietnam Era, no World War II
• Korean War and World War II, no Vietnam Era
• World War II, no Korean War, no Vietnam Era
• Between Gulf War and Vietnam Era only
• Between Vietnam Era and Korean War only
• Between Korean War and World War II only
• Pre-World War II only