Blind, if you have an interest in linear tactics you might enjoy reading David G. Chandler's "The Art of Warfare On Land". ISBN 0-141-39009-3.
Examples of tactics in modern warfare can be gained from several sources.
1. The movie "We Were Soldiers", which is an -extremely- accurate retelling of a certain battle in Vietnam. This movie demonstrates something about
as close to linear tactics as ever occurs in modern battle.
2. Col. John Antal's TDG books, especially Infantry Combat: The Rifle Platoon, can give you an outstanding insight into modern tactics.
3. Reading Tom Clancy's Red Storm Rising. This demonstrates the way modern war is fought at the Strategic and Grand Tactical levels.
4. Get a copy of General Kurlak's pamphlet "War Fighting". It's hardly even a book- you can read it in one sitting.
Examples of things that almost never happen can be obtained from watching Starship Troopers. If you want to enjoy that story you should read the book
instead.
Simply "throwing men at eachother" as an institution, has not happened in a long time. Linear tactics are a lot like American or Canadian Football.
The goal is to maneuver and create mis-matches and unfair fights at key points within the larger "fair fight". As artillery and firearms evolved-
thanks in no small part to the innovations of my favorite historical commander, "The Lion of the North", it became extremely rare for a battle to be
fought to its conclusion. The 18th century was the age of limited warfare. Armies would manuever, skirmish, lay siege, etc as the situation dictated,
and the army which found itself in an untennable position would either surrender or withdraw if able.
Last but not least there is the question of individual valor. That has actually increased as the result of modern technology. Way back when, a single
man didn't really have any options facing 100 men. It couldn't be done. Today, the proper tactical employment of weapons can make a small group or
an individual capable of facing a much larger group, but this introduces a difficult choice. One has to ask himself, "Do I believe in myself this
much. Can I really do this, and am I willing to risk the consequences of failure". This has given rise to acts of heroism like those of the snipers
who volunteered to defend the 3rd crash site in Mogadishu, Somalia.
It has also occasionally lead to men taking on seemingly overwhelming odds against modern weapons. I have had the privlidge of actually meeting Col.
Lewis Millet twice. On a place called "Bayonett Hill" in Korea, Millet's company found themselves cut off and surrounded, heavily outnumbered and
short on ammunition. He lead his men down the hill in a bayonett charge, saving his company in a situation where many would have considered surrender
the only hope.
Last but not least, I have to put a word in for my fellow Devil Dogs in Iraq. These men aren't running down the streets blasting individual enemies
with inferior weapons.
When they were coming into the country they ran gauntlets of ambushes and there were acts of heroism which in wars past may very well have earned the
Congressional Medal of Honor.
Now they patrol in places where they know full well they are not wanted, where there is a strong chance that they will be outnumbered against well
armed enemies who have had the opportunity to set plenty of traps. Just because the insurgents can never hope to drive us out of Iraq does not mean
that the average grunt is not in danger.
GIVE 'EM ONE! (Now if you read that, you dang well better say "KILL" in your next post. That's how Marines are shown recognition in
training).