He did it by building numerous rafts during the night and crossing the hydaspes during the night, all while leaving 5000 soldiers behind during midnight. This enabled him to get a tactical advantage over Porus and eventually helped him win the war.
I definitely recommend search the web
Andrew Jackson and his armies killed nearly 390 British soldiers in the Battle of New Orleans.
Maybe South Africa ? Due to the apartheid Africans that we’re being segregated against wanted independence.