Royal Air Force mechanics biplanes in formation

The video discusses the evolving role of the air force, initially seen as auxiliary to land and sea forces. With advancements in aeronautics, the range and speed of military aircraft increased, leading to the belief that aviation could play a vital, possibly decisive, role in future conflicts.

In what ways could air force be considered auxiliary to fighting men on land and sea?

What does the text suggest about the future of military aviation?