Concrete anti-tank obstacles, also known as ‘Dragon’s Teeth’, were first used during World War II. They are believed to have been invented in Finland as a means of defense against the armored vehicles of the Red Army. The purpose of these obstacles was not only to stop tanks and other armored vehicles but also to direct their movement into areas where they could be targeted by fire. These types of obstacles were widely used by all participants in the conflict, including neutral countries. For example, Switzerland also used similar obstacles, referring to them as Toblerone fortifications, due to their resemblance to the shape of the famous chocolate bars.

Historical & Reference Notes

From ICM's own description:

Illiad Design has recently released an aftermarket decal set covering the T-33.

This decal sheet covers a total of 5 aircraft, and you are provided with enough markings as to be able to model all of them. You are still expected to use the stencils provided with the kit. You have your choice of

• T-33A in American markings in a very attractive SEA camo
• T-33A (the instructions call it a T-22A) from Pakistan in an overall grey-green
• CT-133 RCAF markings in Dark Sea Gray/Dark Green over PRU Blue with a Snoopy drawing in the fin
• T-33 in Luftwaffe in RAL 6014, 7012 and 7001
• CT-133 in wraparound gray and green in low viz Canadian markings.

They are an amazing selection of markings. I particularly liked the T-33 in SEA camo with shark teeth. The instruction sheet says it was the only T-33 to receive SEA camouflage.