Squad
Party, Team
noun, suffix
The kanji and the word are exactly the same. That means they share meanings as well.
たい
The reading is the same as the kanji reading you learned, probably because this is stuck onto things, describing various squads.
海上自衛隊音楽隊に採用された時、彼女は他の自衛隊員と同様に肉体的にも厳しいトレーニングを受けなくてはいけないことを知らなかった。
When she was hired by the Japan Maritime Self-Defense Force Band, she didn’t know that she had to physically work out as hard as them as well.