Share 1 way how to listen to the drum major correctly and know the call outs correctly

In Marching band you practice a lot of music in your own sections like the percussion section, the wind section, and the color guard section and everyone practices the music in a different way except when it comes to practicing all together. When practicing with all the sections together you need to know your music already and know what your playing because when with everyone you need to play the music and listen to the drum major. The Drum Major is the most important part to pay attention to while playing, the drum major keeps the tempo for the whole band so everyone plays together and tells you what song you need to play when in a football game. When in a football game you need to know each song and be ready when the drum leader says the song for you to play so the whole marching band sounds good together and for none of your teachers and leaders to get mad at you. When in a marching band competition you always need to pay attention to the drum leader because a something at marching band shows that the judges really focus on is tempo and how the band plays together so the main thing to focus on is the drum leader and what tempo the drum leader is going at. Make sure to always pay attention to the drum leader and know the call outs so the whole marching band sounds good and make sure to know all your music