As the deadline approached, it was clear that we needed to 'rally the troops'. [=to urge everyone to work harder]
The team's late-game 'rally' [='comeback'] helped them win the game.
a 'youth rally' [=a public meeting for teenagers and young adults]
(..) Aaaare ya achin' Yup, yup, yup Fooor some bacon? Yup, yup, yup Heee's a big pig Yup, yup, yup You could be a big pig too. Yup, yup Nala, you find my mother and rally the lionesses. I'll look for Scar. SARABIII! Yes, Scar? Where is your hunting party? They're not doing their job. (..)1994 The Lion King