WW2 R.A.F. Squadrons generally consisted of 12 aircraft available, although there were operational variations. Depending on role, the squadron would be made up of 'A' Flight and 'B' Flight, each of 6 operational aircraft. On fighter squadrons, the Flights were sub-divided into sections, eg, Red Section, Blue Section, etc, of 2-3 aircaft, again depending on operational requirements.
Simple machines provide a vocabulary for understanding more complex machines. A simple machine is a mechanical device that changes the direction or magnitude of a force.
Definition of equipment for English Language Learners. : 1  supplies or tools needed for a special purpose. : 2  the act of equipping someone or something.