Long bicycle tours can sometimes lead to what looks like a dead end, like ending up in a Mekong River border crossing between Vietnam and Cambodia. The road forward was a path. In this case it was more practical, and more fun, to travel in a multi-modal manner. The four-hour river boat ride into Cambodia cost us $10 and was filled with images of life on the Mekong we would have missed from the shore.
Abrams represented change in military thinking that has carried over, belatedly again, into the contemporary Iraq and Afghanistan wars. But not in the beginning. Shock and Awe was the order of the day at first in Iraq; search and destroy with armor and airpower won the day to Baghdad. Of course the enemy waited and watched, and invented the roadside bomb. General David Petraeus was brought in when old techniques were found lacking. He had read the Book of Abrams, and paid attention.
From supposedly reliable intelligence, Abrams was able to follow the progress of troops and supplies south, and judge where and when the North planned to attack over the border into Vietnam. To paraphrase from A Better War, Lewis Sorley: Troops advanced south in waves 500 to 600, moving at 12.2 kilometers per day, mostly by foot, the trucks saved for supplies and ammunition. We were able to move perhaps 60 Kilometers on the unimproved section, partly because our load was not on our feet, but on our bicycle, and partly because we had no backup supplies; we had to get out of that jungle in short order.