Both Uses

galvanize
in
Flags of Our Fathers
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Back in America, the dramatic island victory on Guadalcanal and its heroes galvanized a new wave of American boys.†
Chpt 3. *
The movement of over 100,000 men—Marines, Navy support personnel, Coast Guard units—across four thousand miles of ocean for three weeks is a triumph of American industry galvanizing itself in a time of great national peril.†
Chpt 6. *

Definitions:

(1) (galvanize as in: galvanized into action)
to stimulate to action
(2) (galvanize as in: galvanized steel)
to cover steel or iron with zinc (to prevent rust)

Galvanized iron or steel is resistant to rust due to electrochemical protection.
(3) (meaning too rare to warrant focus)
Much more rarely, but especially in classic literature, the word may reference Galvani's experiment of 1771 in which he made a dead frog leg twitch by applying electric current.