Remember the TPLF army had a base in eritrea for several years fighting Derg -Ethiopia army & Jebha -Eritrea Liberation Front Army for many years.
It is also important to remember the TPLF and Tigray People liberated the entire Tigray in the year 1989/81 2 years before liberating the entire ethiopia and gave ungrateful Eritreans thier independence.
In military strategy TPLF liberating Tigray in 1989/81 was a big blow to Derg -Ethiopia army it can no longer pass Tigray to fight in eritrea.
Hence it is safe to say the Tigray People Liberation Front Army and Tigray People singlehandedly liberated the entire ethiopia and the coward Eritreans Shabia that was hiding in nakifa for 30 years without no
Military victory.
BTW there was no EPRDF Army it was truly 100% ethnic Tigray People Army who stormed Addis Ababa and ethiopia 33 Years ago.
Long Live the Tigray People!
Awet Nehafash Tigray People!
Republic of Tigray People!
Independence Of Tigray People!
Eternal Glory to Martyrs Tigray People!