rallying cry (n.)

• alarm
• alarum
• bark
• bellow
• birdcall
• call
• catchword
• caterwaul
• cheer
• clarion
• conscription
• cry
• exhortation
• halloo
• holler
• hollo
• hoot
• howl
• hurrah
• levy
• mobilization
• motto
• muster
• rally
• recruitment
• reveille
• roar
• scream
• screech
• shout
• shriek
• slogan
• squall
• squeal
• summons
• taps
• watchword
• whistle
• whoop
• yap
• yawl
• yell
• yelp
• yowl