Not a transcription of the recording, but helps.

I AM ON THE BATTLEFIELD FOR MY LORD

Refrain:
I am on the battlefield for my Lord,
I am on the battlefield for my Lord;
And I promised Him that I would serve Him till I die
I am on the battlefield for my Lord.

1. I was alone and idle, I was a sinner too,
I heard a voice from heaven
Say there is work to do,
I took the Master's hand,
And I joined the Chritian band,
I'm on the battlefield for my Lord.

2. I left my friends and kindred
Bound for the Promised Land,
The grace of God upon me,
The Bible in my hand,
In distant lands I trod,
Crying sinner come to God,
I'm on the battlefield for my Lord.

3. Now when I met my Savior,
I met Him with a smile,
He healed my wounded spirit,
And owned me as His child,
Around the throne of grace,
He appoints my soul a place,
I'm on the battlefield for my Lord.

From: African American Heritage Hymnal (No. 480)

~Masato