From Marshall's "Life of Washington," this map spans the distance from The Amboys in New Jersey (directly across from New York City), to Philadelphia --about 70 miles--and from Philadelphia to Head of Elk--about 50 miles. The British fleet began to unload the army at Head of Elk, Maryland on August 25th after a sea voyage of nearly five weeks, marked by unbearably hot weather and occasional rough seas. After resting his men for a few days, Howe began the British march north and east toward Philadelphia.
Battle of Brandywine
Battle of Brandywine