Timing of the First Human-Rish War

…the Rishatha had set the old Federation and the Terran League at one another’s throats in order to pick their joint bones. Four hundred years later, humanity was still coping with the lingering echoes of the League Wars in places like Shallingsport.
Fortunately, the Rishatha’s military follow through had been less successful than their diplomatic judo throw. They’d ingested most of the old League while a war-weary Federation writhed in the throes of a civil war, but their calculations hadn’t allowed for the Empire that had arisen from the Federation’s ruins under then Fleet Admiral Terrence Murphy, and Terrence I and the House of Murphy had kicked the Lizards back to pre-war boundaries in the Second Human-Rish War.

Those sixty years of vicious, deadly warfare had turned the Federation into the Terran Empire, under Emperor Terrence I of the House of Murphy. They had also led to the League's utter military and economic exhaustion . . . at which point its Rishathan "friends and neighbors" had launched the First Human-Rish War with a devastating assault into its rear areas. Their victim had been taken totally by surprise, and in barely eight years, the Sphere had conquered virtually the entire League.
Unfortunately for the Rish, whose plans had succeeded up to that point with a perfection which would have turned Machiavelli green with envy, the Terran Empire had proved a much tougher proposition. Especially because the time the Sphere was forced to spend digesting its territorial conquests in the League following HRW-I gave Terrence I time to put his own house in order and reorganize, rebuild, and expand his navy.
The Second Human-Rish War had lasted fourteen years, not eight. And despite its war weariness and the political chaos which the six decades of the League Wars had produced, the Empire had been solidly united behind its charismatic new Emperor. Besides, by that time humanity had figured out who was really responsible for those sixty horrendous years of death and destruction. By the end of HRW-II, the Empire had taken two-thirds of the old League's star systems away from the Rish and driven the Sphere to the brink of total military defeat. Under the Treaty of Leviathan, which had formally ended the war, the Rishathan Sphere had been required to return to its pre-HRW-I borders

Robert_A_Woodward wrote:Chapter 5 of _Path of the Fury_ has the following on the League wars and the Human-Rish Wars that followed:

…the Rishatha had set the old Federation and the Terran League at one another’s throats in order to pick their joint bones. Four hundred years later, humanity was still coping with the lingering echoes of the League Wars in places like Shallingsport.
Fortunately, the Rishatha’s military follow through had been less successful than their diplomatic judo throw. They’d ingested most of the old League while a war-weary Federation writhed in the throes of a civil war, but their calculations hadn’t allowed for the Empire that had arisen from the Federation’s ruins under then Fleet Admiral Terrence Murphy, and Terrence I and the House of Murphy had kicked the Lizards back to pre-war boundaries in the Second Human-Rish War.

Everything of the above after “at one another’s throats” was deleted from the otherwise identical chapter 37 of _In Fury Born_. Instead it has, in chapter 2, after the mentioning the century long diplomatic effort by the Rishatha, the following:

Those sixty years of vicious, deadly warfare had turned the Federation into the Terran Empire, under Emperor Terrence I of the House of Murphy. They had also led to the League's utter military and economic exhaustion . . . at which point its Rishathan "friends and neighbors" had launched the First Human-Rish War with a devastating assault into its rear areas. Their victim had been taken totally by surprise, and in barely eight years, the Sphere had conquered virtually the entire League.
Unfortunately for the Rish, whose plans had succeeded up to that point with a perfection which would have turned Machiavelli green with envy, the Terran Empire had proved a much tougher proposition. Especially because the time the Sphere was forced to spend digesting its territorial conquests in the League following HRW-I gave Terrence I time to put his own house in order and reorganize, rebuild, and expand his navy.
The Second Human-Rish War had lasted fourteen years, not eight. And despite its war weariness and the political chaos which the six decades of the League Wars had produced, the Empire had been solidly united behind its charismatic new Emperor. Besides, by that time humanity had figured out who was really responsible for those sixty horrendous years of death and destruction. By the end of HRW-II, the Empire had taken two-thirds of the old League's star systems away from the Rish and driven the Sphere to the brink of total military defeat. Under the Treaty of Leviathan, which had formally ended the war, the Rishathan Sphere had been required to return to its pre-HRW-I borders

I am not certain if these two quotes are completely compatible. The first implies that the First Human-Rish War started during the Federation civil war and the second implies that it started after the Empire was established. I haven’t read the e-Arc of _Rebel_, only the 3/4ths version of the Webscription, but the civil war is well underway. BTW, Terrence Murphy isn’t a Fleet Admiral, though I suppose that the Free Worlds Alliance could give him that rank.