Well, as you know , I am not a certified trainer, and, I am probably using the terms "endurance and conditioning " wrong. My meaning is really very basic, can you do the job? can you perform physically when something goes FUBAR?
For example: Once on a situation, the weather turned to shit and the bird could not get in. We had Tommy Taliban on our ass and being a very small unit, not enough men to engage, wasn't our main objective anyway, so, the option was a 9 hour hump through the mountains in shit conditions. The thought of not being able to maintain a fast pace never entered my mind, I knew I was in shape, knew I could last.
Another time, we were looking for a HVT in Basra, once of the most hellish places on earth, with 120 degree temps and humidity, 11 hours of searching in small goat huts and always looking for IED's left behind. I think I loss about 12 pounds of water that day, but, it never crossed my mind that I couldn't do it, because in our free time we worked out in that heat, doing axle carries, sand bag carries, etc. just to be able to function.
one time on a hostage situation, my team was deployed for over 15 hours in extremely high humidity. After about 3 hours , I had to start rotating them because, I had two on the verge of heat stroke. There were the strongest on the team, but those huge numbers on the bench don't mean shit in the real world.
I guess, what i mean is, its far more important to me for someone to complete a 15 mile fast hump, set up an ambush, and still be able to fight and to do that you need physical and mental "endurance" and no, for others reading this, i don't mean running ten miles a day. I bet , I don't run 3 miles a week.
After I took some minor shrapnel in my left leg, I spent lot of time with loaded carries, including carrying dumbbells on a treadmill. When available, I worked the heavy bag to near exhaustion, and ( i know right, embarrassing isn't it) when people were not around that I worked with, got on the StairMaster that females use for their butts. In full disclosure, that fucking thing kicks my ass, especially carrying dumbbells:))
In the future, when you make tactical and K-9, you will be called on to out perform your dog, especially if you are assigned to find a missing child. Start gearing your training to long rucks, with around 25 to 35 lbs (good pack) because you will need to carry water for you both, food, and unless you have someone with you to cover, while you search, a long rifle or carbine.
As far as training, I am in agreement with you, hard intensity training for 30 to 45 minutes, if done right, will leave you exhausted. Over the past year, except for bag work, I have tried to eliminate "rest periods" . I dont run around like a madman, but, keep a steady pace and do the work.
After reading Sento's and Irish's posts for about the past year, I am taking their experiences and started doing more body weight training. Sento is ( I think) going the gymnastic route for a lot of his training and Irish has started doing some NATMOVE (?) with his boxing.
I pay attention to both of them and so have increased my mobility training, especially since i have to be smarter now due to age, wear and tear.
There are a couple of sites that usually have some good information on tactical training, so, out of respect for our hosts, just Google up Combat Strength Training, Solider Daily Systems , Mountain Tactical Athlete, National Tactical Officers Association, Mike Pannone, Pat McNamara, etc.
I hope this convoluted answer helps. Be safe,