"heroic posture" is correct and usable in written English.
You can use it to describe a physical pose that conveys a sense of bravery or nobility, such as standing up tall and proud with one's chest out. For example, "When she stood up to her oppressors, she did so with a heroic posture, her head held high and her chin up."
Now we know that Rudy Giuliani will be remembered in a more heroic posture.
In the face of this heroic posture, the nephew, Mr. Khan, 25, seemed compelled to explain his own comfort and safety.
Early in his career (1971), he commented on Virgil, 'whose laborious mother-bear methods of composition I adopted as a heroic posture of my own.' I'm not sure - without Harrison's oeuvre to hand - I would have known how a mother-bear composes, but it has a tragic prophetic ring to it.
Heroic posturing embarrassed an American avant-garde that was conscious of inheriting global art-world leadership.
That part of Strauss that perpetuates Wagnerian heroic posturing takes on its mantle in the newer guise of bureaucratic cruelty.
These days, field coats, anoraks and parkas tend to be worn without irony, mostly stripped of any political meaning but embraced nonetheless by those inclined to heroic posturing.
The work is marvelous in small pieces but deflates a bit in the face of Shapiro's heroic posturing over what a poet is.
In coming episodes, presidents will be linked by attributes that include "heroic postures" (Ulysses S. Grant and Dwight D. Eisenhower, among others) and "independent cast of mind" (Zachary Taylor and Jimmy Carter).
Mr. Hubbe, limping to the staggered chords, has a whirlwind encounter with Ms. Whelan, whose technical brilliance deliberately contrasts with his weighted heroic postures.
Aware always of what he called "the desperately thin ice" we walked on, he surveyed the world and our place in it with a pensive realism, striking no heroic postures.
This was done by mounting cameras on the front of the planes, the actors going aloft with a pilot who would duck down as they struck the right heroic postures.
