Editing High-explosive squash head (section)

=== Effect ===
This fragmentation by blast wave is known as 'scabbing' or 'spalling', with the fragments termed 'scabs'' or '[[spall]]'.<ref name=":2"/><ref name=":0"/>

Depending upon the armour thickness, a heavy piece of target material ({{convert|4|to|10|kg|abbr=on}} for a {{convert|120|mm|abbr=on}} round used in [[Arjun MBT]]<ref name=":2"/>) can separate out from the other end of the target with supersonic velocities. This spall is sufficient to permanently damage the essentials of a tank, igniting the ammunition or fuel storage and severely damaging the crew to achieve a "total kill" of the target. In general, the higher the armour thickness, the higher the scab weight will be.<ref name=":0"/>

The fragmentation achieved by impulsive loading of armour block by a HESH round is more lethal than similar [[High-explosive incendiary/armor-piercing ammunition|high explosive]] rounds.<ref name=":2">{{Cite web|author=<!-- Unstated -->|title=120 mm High Explosive Squash Head Mark-I|url=https://www.drdo.gov.in/sites/default/files/inline-files/59-2CIR-16_120mm_High_Explosive_Squash_Head_Mark-I.docx|publisher=[[Defence Research and Development Organisation]] (DRDO), Government of India}} Design aspects of 120 mm HESH round for [[Arjun (tank)|Arjun MBT]]</ref><ref name=":0"/>{{clarify|date=January 2023}}
<gallery widths="250" heights="100">
File:HESH round ,impact from front and back side of an armour block and.jpg|Front and back side of armour block impacted by HESH rounds
File:Damage caused by HESH fort nelson.jpg|Light spalling damage caused by HESH rounds
File:HESH round spall damage.png|Heavy spalling damage caused by HESH rounds
</gallery>