Dan Quayle making a speech to US Marines in Eastern Saudi Arabia

The transcript features a speech by Dan Quayle, highlighting his achievements and honoring the 3rd Armored Cavalry Regiment. It emphasizes the importance of courage, as quoted by Winston Churchill, in ensuring freedom. The speech acknowledges the challenges faced by military personnel and assures them of the support and prayers of the American people.

In what context does the speaker mention 'defending the ramparts of liberty'?

What message does the speaker convey regarding the support of the American people?