Image 4. A building set up for defence
When defending locations, parties to an armed conflict will often develop a combined plan that incorporates both physical obstacles (pre-existing and purpose made) and explosive obstacles. The physical obstacles may include fortified structures or positions such as trenches, barbed wire, roadblocks, bunds, ditches and fixed weapon installations.
Image 5. A small arms and light weapons (SALW) position monitoring an IED belt to increase its effectiveness as an obstacle
IED indicators
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