In competitive Marching Arts activities, performers attempt to synchronize a musical and visual performance. Drumlines in particular are very closely scrutinized by judges, as this group of twenty drummers attempt to synchronize extremely dense and complex rhythms. It is then surprising to learn that microtiming and groove play an important role in coordinating the drumline's rhythmic performance. Turning to pedagogical materials as well as interviews I conducted with the 2023 Bluecoats drumline, I will illustrate how aspects of microtiming, groove, and timing "feels" play a crucial role in getting drummers to synchronize. Finally, I argue the drummer's awareness of microtiming, and the use of microtiming and groove as a pedagogical tool in marching percussion demonstrates the role embodied rhythm and meter play in coordinating ensemble performance of complex rhythms.