cavalry

骑兵们在战场上激战。

The ___cavalry fought fiercely on the battlefield.

现代骑兵部队使用装甲车而不是马匹进行快速机动。

Modern ___cavalry units use armored vehicles for rapid mobility instead of horses.

就在我们快要放弃的时候，援兵及时赶到提供了帮助。

When we were about to give up, the ___cavalry came just in time to offer assistance.