detach
: to separate (something) from something larger
: to separate (yourself) from someone or something
dispatch
: to send (someone or something) quickly to a particular place for a particular purpose
: to defeat (a person or team) in a game, contest, etc.
: to kill (a person or animal) quickly
很顯然,同為表達漢語的“派遣”之意時,detach強調的是“separate ...from”,即從壹個整體中的“分離”感;而dispatch則強調的是“去執行”感,不含有更不強調“脫離”意味。