Shiva turned to Kali, surrounded by the roars of his warriors, and nodded at her. A small cold smile curved Kali’s lips and she nodded in return, her eyes glittering, and swung her sword so it flashed in the sun. Then she raised a single hand to the soldiers behind her, and a wave of silence rolled out across the army until all that could be heard was the wind snapping at the banners flying above their heads. She signalled again and the men tensed and readied their weapons. Then she raised one sword, pointed towards the sky, and with a blood-curdling scream, brought her blade forward to unleash a roaring tide of men at the walls.

Shiva keenly observed the battle raging in a narrow section of the fortified pathway. Kali was engaged in making repeated assaults with the Vasudev elephants and makeshift catapults, concentrating all resources on breaching one small section. A small number of exceptionally brave Naga soldiers fought against daunting odds as the Meluhans shot arrows and poured boiling oil from the battlements that lined the pathway. Famed for their superhuman courage, the Nagas were ideal for this battle of attrition. Small breaches began opening up on the pathway walls; Shiva’s soldiers would soon be able to block the city’s access to its port. This triggered the reaction that Shiva expected from Vidyunmali. The main gates of Mrittikavati were thrown open and the Meluhans marched out, arranged in a formation that they had learnt from Shiva himself.

The Meluhan soldiers had formed themselves into squares of twenty by twenty men. Each soldier covered the left half of his body with his shield and the right half of the soldier to the left of him. The soldier behind used his shield as a lid to cover himself and the soldier in front. Each warrior used the space between his own shield and the one next to him to hold out his long spear. This formation provided the defence of a tortoise but could also be used as a devastatingly offensive battering ram with long spears bearing in on the enemy.

However, the tortoise had one weakness that was known to the creator of the formation himself: Shiva. This chink in the armour was at its rear; if attacked from behind, there was little that the soldiers could do. They were weighed down with heavy spears which pointed ahead. It was difficult to turn around quickly. Furthermore, there was no shield protection at the back of the formation. So if an enemy were to get behind, he could attack the soldiers and rout them completely.

Shiva turned towards Sati with a smile. ‘Vidyunmali is so predictable.’

Sati nodded. ‘To formation?’

‘To formation,’ agreed Shiva.