Power to resist attack; strength; firmness.

That strength or firmness of mind which enables a person to encounter danger with coolness and courage, or to bear pain or adversity without murmuring, depression, or despondency; passive courage; resolute endurance; firmness in confronting or bearing up against danger or enduring trouble.

strength of mind that enables a person to encounter danger, or bear pain or adversity, with courage

The Fortitude is a painting by the Italian Renaissance master Sandro Botticelli, finished in 1470. It is housed in the Galleria degli Uffizi, in Florence.

A long-term operation to conceal the true whereabouts of the D-Day landings.

The shadow operation conceived to conceal Overlord.

Operational code name for the Allied deception operations prior to the invasion of Normandy

Combat

Determination, or sticking to what you know you should be doing.