what ironies do you detect in Ted Lavender's death?

The first casualty for the company is Ted Lavender, a soldier who is shot dead outside Than Khe. O’Brien recounts that he hits the ground solidly, fast, weighed down by all the things he was carrying. He was more afraid of the enemy than most soldiers, so he was carrying more ammunition than was required. Irony can be found in the fact that Ted was probably the most careful men in the company. It is also ironical that Lavender used drug to calm himself, and while his mates waited for his body to be picked up..... the smoked all of his marijuana.