On the Union side of the battle of Kingsport almost all of the men doing the fighting were local boys from East Tennessee and were all cavalry. I figure that is how they knew about and took advantage of Kyle’s Ford to get behind the Rebels so fast.
The best overall description of the battle that I have found so far was written by Union Maj-Gen Alvan C. Gillem who commanded the attacking forces. I also found a more first hand account co-written by Capt. Samuel W. Scott and Adj. Samuel P. Angel with the Thirteenth Tennessee Cavalry which I will include at the end.