[1] In the early 1950s, Hainyeko arrived in Cape Town, South Africa just after the Ovamboland People's Congress (OPC) was formed.

[1] In 1965 Hainyeko, together with Peter Nanyemba and John Nankudhu, led the first group of SWALA combatants from their military camp in Kongwa, Tanzania via Nakonde, Zambia to the Namibian border at Sesheke to commence the armed struggle in Namibia.

It was from the Omugulugwombashe base that SWALA guerrillas launched its armed struggle against the South African administration on 26 August 1966, this would mark the beginning of the Namibian War of Independence which lasted until 1989.

On May 18, 1967, while on combat mission to improve communications between his operational headquarters in Tanzania and PLAN's guerrilla units in Namibia, he shot and seriously wounded two South African policemen patrolling the Kwando river.

SWAPO reported that he was betrayed to the South Africans by the local manager of Caltex, who ran barges along the Zambezi from Katima Mulilo.