When Chapultepec fell the advance commenced along the two aqueduct roads.

I was on the road to San Cosme, and witnessed most that took place on that route.

When opposition was encountered our troops sheltered themselves by keeping under the arches supporting the aqueduct, advancing an arch at a time.

We encountered no serious obstruction until within gun-shot of the point where the road we were on intersects that running east to the city, the point where the aqueduct turns at a right angle.

I have described the defences of this position before.