They covered the retreat with probably the earliest organized American use of the bayonett charge.
Yes, absolutely! The Marylanders bought Washington time. The posted article didn't really do them justice. Incredibly, the remains of many of them apparently lie buried beneath a body and fender shop in Brooklyn. However, there is a monument to them in Greenwood Cemetery where part of the battle took place.
"During the Battle of Brooklyn, Long Island, on August 27, 1776, the sturdy house and its strategic position at a cross-roads made it the focus of the most dramatic event of the day. Taken in the morning by an estimated two thousand British soldiers, it blocked the retreat of the out-manned American army in the field.
Turning against the stronghold, some four hundred soldiers from Maryland and Delaware, led by General William Alexander, Lord Stirling, attacked it five times and regained the house twice, but were finally repulsed.
Watching from Brooklyn Heights, General George Washington and 8000 troops were heartened by the valor they witnessed, and it hardened their resolve to fight on. The unit lost 256 men, a significant part of the over 1000 American casualties that day."
Source: http://www.theoldstonehouse.org/history.php
More on the Marylanders here:
http://search.yahoo.com/search?p=%22battle+of+brooklyn%22%22marylanders%22&ei=UTF-8&fr=moz2