Austin presumably got the story from
here .
It is a little sub-Kipling, although I agree that the opening stanzas have a certain vigour. Perhaps more Newbolt than Kipling.
Just by way of comparison, here are some stanzas from Don Juan, on another battle between Turks and Russians. It comes from the end of Canto VIII, after the fall of Ismail to the Russians:
CXX.
But the stone bastion still kept up its fire,
Where the chief Pasha calmly held his post:
Some twenty times he made the Russ retire,
And baffled the assaults of all their host;
At length he condescended to inquire
If yet the city's rest were won or lost;
And being told the latter, sent a Bey
To answer Ribas' summons to give way.
CXXI.
In the mean time, cross-legged, with great sang-froid,
Among the scorching ruins he sat smoking
Tobacco on a little carpet (Troy
Saw nothing like the scene around), yet looking
With martial stoicism. Nought seemed to annoy
His stern philosophy; but gently stroking
His beard, he puffed his pipe's ambrosial gales,
As if he had three lives, as well as tails.
CXXII.
The town was taken. Whether he might yield
Himself or bastion little mattered now;
His stubborn valour was no future shield.
Ismail's no more. The crescent's silver bow
Sunk, and the crimson Cross glared o'er the field,
But red with no redeeming gore: the glow
Of burning streets, like moonlight on the water,
Was imaged back in blood, the sea of slaughter.
CXXIII.
All that the mind would shrink from of excesses,
All that the body perpetrates of bad,
All that we read, hear, dream, of man's distresses,
All that the devil would do if run stark mad,
All that defies the worst which pen expresses,
All by which hell is peopled, or as sad
As hell, mere mortals who their power abuse,
Was here (as heretofore and since) let loose.