vantage ground

a position or place that gives one an advantage, as for action, view, or defense.

Origin of vantage ground

First recorded in 1605–15

The halls of Congress afforded the vantage-ground from which assaults were made upon these guarantees.

The Rise and Fall of the Confederate Government, Vol. 1 (of 2) |Jefferson Davis
No pleasure is comparable to the standing upon the vantage-ground of truth.

Familiar Quotations |John Bartlett
With good field-glasses there is no other vantage-ground for bird study equal to this.

Wild Life Near Home |Dallas Lore Sharp
This is just the vantage-ground we desire in order to secure good expression.

Special Method in the Reading of Complete English Classics |Charles McMurry

“They are there,” said I, surveying from my vantage-ground the thinning ranks.

The First Violin |Jessie Fothergill

vantage ground

a position or condition affording superiority or advantage over or as if over an opponent