tip of the spear

Translations
передовой отряд
The special forces are often the tip of the spear in military operations.
Специальные силы часто являются передовым отрядом в военных операциях.
Definitions
The phrase 'tip of the spear' refers to the leading edge or the most advanced part of a movement, initiative, or military operation. It signifies the forefront of an effort, often involving those who are the first to engage or take action in a particular situation.
Words
tip

noun
кончик
spear

noun
копьё