Possible Clues:

• ... certain GI sniper holding up badge
• NUT quit insinuating false identification
• Trappings of office I gain unexpectedly after getting elected head of school
• One in training's disrupted after leading pair go for badges
• Emblem on a military uniform
• Cabin sign I add displaying emblem
• Stars and stripes, say, taken back inside by certain GIs nightly
• One gains in collecting badges of office
• Badges to show official position
• Certain GI sniper returned securing decoration