Best Book/Reading on Small unit tactics, particularly squad level?

<h1 id="title" class="a-size-large a-spacing-none" style="box-sizing: border-box; font-family: Arial, sans-serif; text-rendering: optimizelegibility; font-size: 21px; line-height: 1.3; color: rgb(51, 51, 51);"><span id="productTitle" class="a-size-large" style="box-sizing: border-box; line-height: 1.3; text-rendering: optimizelegibility;">The Defense Of Duffer's Drift - A Lesson in the Fundamentals of Small Unit Tactics.</span></h1><div><span class="a-size-large" style="box-sizing: border-box; line-height: 1.3; text-rendering: optimizelegibility;"><br></span></div><div><span class="a-size-large" style="box-sizing: border-box; line-height: 1.3; text-rendering: optimizelegibility;">This was on my reading list as a young Marine Infantryman, I was not to enthused about having mandatory reading at that age, especially out of school finally, but once I got into this book it was awesome. &nbsp;It doesn't really cover today's tactics but will help guide the mind in critical thinking about small unit tactics, and what to look for and what/how to think about the unknown or unseen when conducting small unit operations. &nbsp;I would recommend this book to everyone serving in any branch of the military, its a great read to help shape the way we think other than for ourselves.</span></div>

The Ranger Handbook. Maybe not what you're looking for...

"Leadership and Training for the Fight" by MSG Paul R. Howe (USA Ret).

For the current conflict, I would recommend "The bear went over the moutain" and "The other side of the moutain". The first is written from the perspective of the Soviet Army in Afghanistan and the companion  (second) book is written from the perspective of the Mujahideen fighters. Both are written in an AAR type format with insight from the ground commanders. Definitely a good read!

FM 7-8 the Infantry Rifle Platoon and Squad, USMC Small Wars Manual (A little outdated in some areas but a good starting point for small unit operations), also look at the website smallwarsjournal.com, interesting posts and ideas come up every once in a while.

There are several really good books out there. One of my favorites is a Marine Corps unit based book titled A Battle Won by Handshakes: The Story of Alpha Company 1/5. It is about small unit leadership in combat, using military tactics to fight the Taliban in Afghanistan and its implications at the tactical and strategic levels of war, along with combining counterinsurgency (COIN). check it out at http://www.abattlewonbyhandshakes.com. Hope this helps!

It Doesn't Take a Hero: The Autobiography of General H. Norman Schwarzkopf