Captions are set up like Figure 1. Caption, I need it to be Figure 1. <text> Caption, with the same text to all figures, and I need it to be part of the caption, not figure name **.
I tried with what I know and did
\renewcommand{\caption}[1]{ \caption{<text> #1} }
And that didn't work because all the captions in my text are written as \caption[shortcaption]{caption}. Found this question which was really insightful, but I couldn't make it work with changes I thought of doing.
Clearly, I need to define caption correctly by including \shortcaption in the redefinition but I don't know how to do that.
How do I prepend text to caption as explained above? Thanks!
** This is a workaround I found for another problem. In book class, using a template I didn't write and can't change for my thesis, captions are not justified even with the correct package settings. But they do justify if before writing the caption I add the code \vspace{0pt}\justifying\noindent. So, I want to prepend that to my caption command and avoid writing it every time.

\captionwhich will trigger an infinite loop. Using\Captioninstead, newly defined as\newcommand{\Caption}[1]{ \caption{<text> #1} }could be a way out. – Partha D. Feb 19 '19 at 03:34